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The personnel department of a large corporation wants to estimate-(Answered)

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Question

The personnel department of a large corporation wants to estimate the family dental expenses of its employees to determine the feasibility of providing a dental insurance plan. A random sample of 12 employees reveals the following family dental expenses (in dollars): 115, 370, 250, 593, 540, 225, 177, 425, 318, 182, 275, and 228.


Construct a 99% confidence interval estimate for the standard deviation of family dental expenses for all employees of this corporation.


what is the LOWER limit, in dollars rounded to 1 decimal place? ?


what is the?UPPER limit, in dollars rounded to 1 decimal place??


Total Numbers

 

12

 

Mean (Average)

 

308.16667

 

Standard deviation

 

147.92801

 

Variance(Standard deviation)

 

21882.69697

 

Population Standard deviation

 

141.63029

 

Variance(Population Standard deviation)...

 

Paper#9257378 | Written in 27-Jul-2016

Price : $16
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